Feed-water purifier.



UNITED STATES PATENT OFFICE.

JAMES W. PEARCE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TOLESTER C. KEYSER, OF PHILADELPHIA, PENNSYL- VANIA.

FEED-WATER PURIFIER.

SPECIFICATION forming part of' Letters Patent No. 694,571, dated March4, 1902. t

Y Application-filed April 25, 1901. Serial No. 57,384. (No model.)

water to pass through them from the feed? pipe to the boiler and thosenearer the bottom allowing passage in the opposite direction. Thisconstruction permits the impurities in the vwater to settle inthedifferent compartments, the cleaner water in the .upper portion of thecompartment passinginto the next, while the muddier and dirtier portionsremain in the compartment comparatively undisturbed, and the dirt isallowed to quietlyV settle out.

Describing now the best construction of my invention, Figure l is alongitudinal section through the boiler and purifier. Fig. 2 is across-section on line ZZ of Fig. 1, and Fig. 3 is a perspective of thepu rier apart from the boiler.

The boiler A is shown as a return tubular boiler; but my invention isapplicable to any boiler havingasufticient open space to receive thepurifier-box. The purifier-box D is placed Within the boiler and hasconnected with it the feed-pipe C. This pipe is suitably connected inany usual or convenient manner.'

The box D is provided with partitions G G,

dividingit into compartments. In the upper part of these partitions arethe ports E E, which are closed by the valves F F, that open only in thedirection of the movement of the water through the box into the boiler.With the first of these compartments the feed-pipe O communicates. Inthe lower part ot' the partitions G G are placed the ports .I J, closedby the valves H H, that open in the opposite direction from theY valvesF F and allow passage in the opposite direction. From the lastcompartment of the box D the water flows into the boiler, and for thispurpose a depression, as d, is generally provided.

Athe boiler by the manhole.

The purifier-box can be kept away from the bottoni of the boiler A byhangers K K or otherwise suitably supported and can be of any convenientshape in cross-section; but an elliptical shape has some advantages inenabling it to be more readily entered into It is preferably closed fora portion of its length at the top and is generally placed so that thetop of the box is a little higher than the water-level in the boiler.

Means are provided by which the feed-pipe O can be converted into aboiler-exhaust pipe. A very convenient form is that shownin Fig. 1,where the pipe C communicates with the pipe B, the portion Lof whichcommunicates with the source of feed-water and the portion M'exhaustsinto the air or sewer, the valves X and Y determining which ofl the twothe pipe C shall form the continuation ol". The water enters throughpipe O one of the comipartments. There it is comparatively undisturbed,and the mud settles down toward the bottom, the clearer water at theupper part `of the box passing through the port E to the nextcompartment. Here a further depositing out of the mud or sediment takesplace,

'and again the clearer water flows out through port E'into the nextcompartment. The Wa- Ater after passing through the various compartmentsflows out from the box. It will be s een readily that it will be almostentirely cleared of mechanical and chemical impurities. The mudorsediment gathers at the bottom of the various compartments. When theboiler is to be blown out, the valve X is closed and the Valve Yisopened,and this pressure in the boiler drives the water forcibly ont.The lower valves now open,and the mud, sediment, and precipitate isdriven through them out through the pipe C.

Having now described my inventionnwhat I claim, and desire to securebyLetters Patent, 1s-

l. In a feed-water purifier, situated within the boiler, the combinationof aseries of compartments, water-passages at various heights connectingsaid compartments, a feed-waterinlet pipe opening into one of saidcompare ments, an outlet for the feed-Water into the boiler, and valvesin said passages, the valve IOO in the upper passage opening in thedirection of the flow of the water from the feed-pipe into the boiler,and the valve in the lower passage opening in the direction of the flowof the Water from the boiler to the exhaustwater pipe; substantially asdescribed.

2. In a feed-water purifier the combination .of a box, having a portionof the top thereof ing an open space lower and outlets therefrom intothe boiler; supports for said box, maintaining it so that the saidoutlets are near the Water-line of the boiler; partitions dividing theinclosed portion of the box into compartments; Valves near the upperpart of the partitions, opening toward the open end of the box; andvalves in the lower portion of said partitions, opening toward theclosed end of the box; a pipe leading into the lower part of the closedend of the box and means for converting this pipe into a boiler-exhaustpipe; substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

JAMES NV. PEARCE. Witnesses:

GEO. W. REED, M. W. COLLET.

